/* Copyright */
/*******************************************************************************
 * The MIT License (MIT)
 *
 * Copyright (c) 2014 Tsunagi-BPM
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *******************************************************************************/
 /* Copyright End */
 
package tsunagi.json.path.condition;

import java.util.ArrayDeque;
import java.util.Deque;

/**
 * Implement First-In First-Out
 *
 */
public class Conditions {
	private Deque stack = new ArrayDeque<Object>();
	
	public void push(Object obj) {
		stack.push(obj);
	}
	
	public Object peek() {
		return stack.peekLast();
	}
	
	public Object pop() {
		Object obj = stack.getLast();
		stack.removeLast();
		return obj;
	}
	
	public void removeFirst() {
		stack.removeFirst();
	}
	
	public void push(String operator, String left, String right) {
		Condition cond = new Condition(operator,left, right);
		push(cond);
	}

	public void push(String operator, String left, Condition right) {
		Condition cond = new Condition(operator,left, right);
		push(cond);
	}
	public void push(String operator, Condition left, String right) {
		Condition cond = new Condition(operator,left, right);
		push(cond);
	}
	public void push(String operator, Condition left, Condition right) {
		Condition cond = new Condition(operator,left, right);
		push(cond);
	}
	public int size() {
		return stack.size();
	}
	public Object[] getAll() {
		return stack.toArray();
	}
	public void addAll(Object[] objs) {
		for(Object obj:objs) {
			stack.add(obj);
		}
	}
	public Conditions copy() {
		Conditions copy = new Conditions();
		copy.addAll(this.getAll());
		return copy;
	}
}
